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RF300 system planning 4.6 EMC Directives
Prevention of interference by optimum configuration
Good interference suppression can be achieved by installing SIMATIC PLCs on conducting mounting plates (unpainted). When setting up the control cabinet, interference can be prevented easily by observing certain guidelines. Power components (transformers, drive units, load power supply units) should be arranged separately from the control components (relay control unit, SIMATIC S7).
As a rule:
•The effect of the interference decreases as the distance between the interference source and interference sink increases.
•The interference can be further decreased by installing grounded shielding plates.
•The load connections and power cables should be installed separately from the signal cables with a minimum clearance of 10 cm.
3RZHU VXSSO\
&& (8
6KLHOG SODWH
'ULYH
Figure 4-24 Prevention of interference by optimum configuration
SIMATIC RF300 |
4-51 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
RF300 system planning 4.6 EMC Directives
Filtering of the supply voltage
External interference from the mains can be prevented by installing line filters. Correct installation is extremely important, in addition to appropriate dimensioning. It is essential that the line filter is mounted directly at the cabinet inlet. As a result, interference is filtered promptly at the inlet, and is not conducted through the cabinet.
&RUUHFW |
,QFRUUHFW |
/LQH ILOWHU
,V
/LQH ILOWHU 
,V
,F LQWHUIHUHQFH FXUUHQW
Figure 4-25 Filtering of the supply voltage
4-52 |
SIMATIC RF300 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
RF300 system planning 4.6 EMC Directives
4.6.6Prevention of interference sources
A high level of immunity to interference can be achieved by avoiding interference sources. All switched inductances are frequent sources of interference in plants.
Suppression of inductance
Relays, contactors, etc. generate interference voltages and must therefore be suppressed using one of the circuits below.
Even with small relays, interference voltages of up to 800 V occur on 24 V coils, and interference voltages of several kV occur on 230 V coils when the coil is switched. The use of freewheeling diodes or RC circuits prevents interference voltages and thus stray interference on conductors installed parallel to the coil conductor.
5HOD\ FRLOV |
9DOYHV |
&RQWDFWRUV |
|
|
%UDNHV |
Figure 4-26 Suppression of inductance
Note
All coils in the cabinet should be suppressed. The valves and motor brakes are frequently forgotten. Fluorescent lamps in the control cabinet should be tested in particular.
SIMATIC RF300 |
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System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
RF300 system planning 4.6 EMC Directives
4.6.7Equipotential bonding
Potential differences between different parts of a plant can arise due to the different design of the plant components and different voltage levels. If the plant components are connected across signal cables, transient currents flow across the signal cables. These transient currents can corrupt the signals.
Proper equipotential bonding is thus essential.
•The equipotential bonding conductor must have a sufficiently large cross section (at least 10 mm2).
•The distance between the signal cable and the associated equipotential bonding conductor must be as small as possible (antenna effect).
•A fine-strand conductor must be used (better high-frequency conductivity).
•When connecting the equipotential bonding conductors to the centralized equipotential bonding strip (EBS), the power components and non-power components must be combined.
•The equipotential bonding conductors of the separate modules must lead directly to the equipotential bonding strip.
&DELQHW |
&DELQHW |
3RZHU VXSSO\ |
|
|
'HYLFH |
,QFRUUHFW |
|
'HYLFH |
|
'HYLFH
3/&
,QFRUUHFW
(%6 
'ULYH
Figure 4-27 Equipotential bonding (EBS = Equipotential bonding strip)
The better the equipotential bonding in a plant, the smaller the chance of interference due to fluctuations in potential.
Equipotential bonding should not be confused with protective earthing of a plant. Protective earthing prevents the occurrence of excessive shock voltages in the event of equipment faults whereas equipotential bonding prevents the occurrence of differences in potential.
4-54 |
SIMATIC RF300 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
RF300 system planning 4.6 EMC Directives
4.6.8Cable shielding
Signal cables must be shielded in order to prevent coupling of interference.
The best shielding is achieved by installing the cables in steel tubes. However, this is only necessary if the signal cable is routed through an environment prone to particular interference. It is usually adequate to use cables with braided shields. In either case, however, correct connection is vital for effective shielding.
Note
An unconnected or incorrectly connected shield has no shielding effect.
As a rule:
•For analog signal cables, the shield should be connected at one end on the receiver side
•For digital signals, the shield should be connected to the enclosure at both ends
•Since interference signals are frequently within the HF range (> 10 kHz), a large-area HFproof shield contact is necessary
Figure 4-28 Cable shielding
SIMATIC RF300 |
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System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
RF300 system planning 4.6 EMC Directives
The shielding bus should be connected to the control cabinet enclosure in a manner allowing good conductance (large-area contact) and must be situated as close as possible to the cable inlet. The cable insulation must be removed and the cable clamped to the shielding bus (high-frequency clamp) or secured using cable ties. Care should be taken to ensure that the connection allows good conductance.
Cable tie
5HPRYH SDLQW
Figure 4-29 Connection of shielding bus
The shielding bus must be connected to the PE busbar.
If shielded cables have to be interrupted, the shield must be continued via the corresponding connector housing. Only suitable connectors may be used for this purpose.
6KLHOG WXUQHG XSVLGH GRZQ WKURXJK r DQG FRQQHFWHG WR FRQQHFWRU KRXVLQJ
5XEEHU VOHHYH
Figure 4-30 Interruption of shielded cables
If intermediate connectors, which do not have a suitable shield connection, are used, the shield must be continued by fixing cable clamps at the point of interruption. This ensures a large-area, HF-conducting contact.
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System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
Readers |
5 |
5.1Overview
The reader ensures inductive communication with the transponders, and handles the serial connection to the communication modules/interface modules and 8xIQ-Sense module.
Communication between the transponder and reader takes place over inductive alternating fields.
The transmittable data volume between reader and transponder depends on:
•the speed at which the transponder moves through the transmission window of the reader.
•the length of the transmission window.
•the transponder type (FRAM, EEPROM).
SIMATIC RF300 |
5-1 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
Readers
5.2 RF310R with IQ-Sense interface
5.2RF310R with IQ-Sense interface
5.2.1Features
Reader RF310R |
Features |
|
|
|
Design |
(1) |
IQ-Sense interface |
|
|
(2) |
Operating indicator |
|
Field of application |
Identification tasks on small |
|
|
|
assembly lines in harsh industrial |
|
|
|
environments |
|
|
Read/write distance to transponder |
max. 30 mm |
|
|
Data transmission rate |
• Read: approx. 50 bytes/s |
|
|
|
• Write: approx. 40 bytes/s |
|
5.2.2Display elements of the RF310R reader with IQ-Sense interface
Table 5-1 Display elements of the reader
Color |
Meaning |
Green |
Operating voltage available |
yellow |
Transponder present |
red |
Errors |
5.2.3Ensuring reliable data exchange
The "center point" of the transponder must be situated within the transmission window.
5-2 |
SIMATIC RF300 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
Readers 5.2 RF310R with IQ-Sense interface
5.2.4Metal-free area
The RF310R can be flush-mounted in metal. Please allow for a possible reduction in the field data values.
|
D |
|
|
6,0$7,& |
|
D |
5) 5 |
D |
|
D |
|
Figure 5-1 Metal-free area for RF310R
To avoid any impact on the field data, the distance a should be ≥ 20 mm.
5.2.5Minimum distance between RF310R readers
6,0$7,&
5) 5
0LQLPXP GLVWDQFH EHWZHHQ 5) 5 DQG 5) 5
'' PP
|
' |
6,0$7,& |
6,0$7,& |
5) 5 |
5) 5 |
Figure 5-2 Minimum distance between RF310R readers
SIMATIC RF300 |
5-3 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
Readers
5.2 RF310R with IQ-Sense interface
5.2.6Technical data for RF310R reader with IQ-Sense interface
Table 5-2 |
Technical data for RF310R reader with IQ-Sense interface |
|
|
|
|
Inductive interface to the transponder |
|
|
Transmission frequency for power/data |
13.56 MHz |
|
Interface to SIMATIC S7-300 |
IQ-Sense, 2-wire non-polarized |
|
Required master module |
8-IQ-Sense (6ES7 338-7XF00-0AB0) |
|
RFID channels (RF310R) |
max. 2 per master module, |
|
Mixed operation with other profiles |
max. 4 Opto-BEROs, 1x SIMATIC RF310R |
|
Cable length between reader and communication |
Max. 50 m (unshielded cable) |
|
module |
|
|
Read/write distances of reader |
See RF310R field data |
|
Minimum distance between two RF310R readers |
≥ 400 mm |
|
Data transfer rate for read/write device |
|
|
Reading |
|
Approx. 50 bytes/s |
Writing |
|
Approx. 40 bytes/s |
Passing speed |
|
|
Reading |
|
Approx. 0.8 m/s (2 bytes) |
Writing |
|
Approx. 0.8 m/s (2 bytes) |
Function |
|
Read, write, initialize transponder |
Multi-tag |
|
no |
Voltage supply |
via IQ-Sense master module 24 V DC |
|
Display elements |
2-color LED (operating voltage, |
|
|
|
presence, error) |
Plug connector |
M12 (4-pin) |
|
Enclosure |
|
|
Dimensions (in mm) |
55 x 75 x 30 (without M12 enclosure connector) |
|
Color |
|
Anthracite |
Material |
|
Plastic PA 12 |
Fixing |
|
4 x M5 screws |
Ambient temperature |
|
|
during operations |
-25°C to +70°C |
|
during transport and storage |
-40°C to +85°C |
|
Degree of protection to EN 60529 |
IP65 |
|
Shock to EN 60 721-3-7 Class 7 M2 |
50 g |
|
Overall shock response spectrum, Type II |
1 g (9 to 200 Hz) |
|
Vibration to EN 60 721-3-7 Class 7M2 |
1.5 g (200 to 500 Hz) |
|
Weight |
|
Approx. 200 g |
MTBF (Mean Time Between Failures) in years |
153,5 |
|
Approvals |
|
Radio to R&TTE guidelines EN 300 330, |
|
|
EN 301 489, CE, FCC |
5-4 |
SIMATIC RF300 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
Readers 5.2 RF310R with IQ-Sense interface
5.2.7FCC information
Siemens SIMATIC RF300 with IQ-Sense interface FCC ID: NXW-RF310R-IQ
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1)This device may not cause harmful interference.
(2)This device must accept any interference received, including interference that may cause undesired operation.
Caution
Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
5.2.8 |
Ordering data of RF310R with IQ-Sense interface |
|
|
|
|
|
|
|
|
RF310R |
Order No. |
|
|
With IQ-Sense interface |
6GT2801-0AA00 |
|
|
for ET 200M to SIMATIC S7-300 |
|
|
|
IP65, -25° to +70°C, 71 x 75 x 30 (L x W x H in mm), with integrated |
|
|
|
antenna, max. limit distance: 30 mm (depending on transponder) |
|
SIMATIC RF300 |
5-5 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
Readers
5.2 RF310R with IQ-Sense interface
5.2.9Dimension drawing
6,0$7,&
5) 5
Figure 5-3 Dimension drawing for RF310R
|
|
5-6 |
SIMATIC RF300 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
Readers 5.3 RF310R with RS 422 interface
5.3RF310R with RS 422 interface
5.3.1Features
Reader RF310R |
Features |
|
|
|
Structure |
(1) |
RS 422 interface |
|
|
(2) |
Operating indicator |
|
Field of application |
Identification tasks on small |
|
|
|
assembly lines in harsh industrial |
|
|
|
environments |
|
|
Read/write distance to transponder |
max. 30 mm |
|
|
Data transmission rate |
• Read: approx. 3100 bytes/s |
|
|
|
• Write: approx. 3100 bytes/s |
|
5.3.2Display elements of the RF310R reader with RS 422 interface
Table 5-3 Display elements of the reader
Color |
Meaning |
Green |
Operating voltage available |
yellow |
Transponder present |
red |
Errors |
5.3.3Ensuring reliable data exchange
The "center point" of the transponder must be situated within the transmission window.
SIMATIC RF300 |
5-7 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
Readers
5.3 RF310R with RS 422 interface
5.3.4Metal-free area
The RF310R can be flush-mounted in metal. Please allow for a possible reduction in the field data values.
|
D |
|
|
6,0$7,& |
|
D |
5) 5 |
D |
|
D |
|
Figure 5-4 Metal-free area for RF310R
To avoid any impact on the field data, the distance a should be ≥ 20 mm.
5.3.5Minimum distance between RF310R readers
6,0$7,&
5) 5
0LQLPXP GLVWDQFH EHWZHHQ 5) 5 DQG 5) 5
'' PP
|
' |
6,0$7,& |
6,0$7,& |
5) 5 |
5) 5 |
Figure 5-5 Minimum distance between RF310R readers
5-8 |
SIMATIC RF300 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
Readers 5.3 RF310R with RS 422 interface
5.3.6Technical data of the RF310R reader with RS 422 interface
Table 5-4 Technical data of the RF310R reader with RS 422 interface
Inductive interface to the transponder Transmission frequency for power/data
Antenna
Interface to communication module
Baud rate
Cable length between reader and communication module
Read/write distances of reader
Minimum distance between two RF310R readers
Maximum data transfer rate from reader to transponder (Tag)
Reading
Writing
Functions
Voltage supply
Display elements
Plug connector
Enclosure
Dimensions (in mm)
Color
Material
Fixing
Ambient temperature during operations
during transport and storage
Degree of protection to EN 60529
Shock to EN 60 721-3-7 Class 7 M2 Overall shock response spectrum, Type II Vibration to EN 60 721-3-7 Class 7 M2
Weight
MTBF (Mean Time Between Failures) in years
Approvals
13.56 MHz
Integrated
RS 422 (3964R protocol)
19200 baud, 57600 baud, 115200 baud Max. 120 m
Data cable length max. 1000 m (shielded cable)
See RF310R field data ≥ 400 mm
Approx. 3100 bytes/s Approx. 3100 bytes/s
Initialize/read/write transponder
Scan status and diagnostics information Switch antenna on/off
Repeat command
Scan transponder serial numbers 24 V DC, 30 mA typ.
2-color LED (operating voltage, presence, error)
M12 (8-pin)
55 x 75 x 30 (without M12 device connector) Anthracite
Plastic PA 12 4 x M5 screws
-25 °C to +70 °C -40 °C to +85 °C
IP65
50 g
1 g (9 to 200 Hz)
1.5 g (200 to 500 Hz) Approx. 200 g 169,9
Radio to R&TTE guidelines EN 300 330, EN 301489, CE, FCC
SIMATIC RF300 |
5-9 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
Readers
5.3 RF310R with RS 422 interface
5.3.7FCC information
Siemens SIMATIC RF310R with RS 422 interface FCC ID: NXW-RF310R
This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions:
(1)This device may not cause harmful interference.
(2)This device must accept any interference received, including interference that may cause undesired operation.
Caution
Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
5.3.8 |
Ordering data for RF310R with RS 422 interface |
|
|
|
|
|
|
|
|
RF310R |
Order No. |
|
|
With RS 422 interface (3964R) |
6GT2801-1AA10 |
|
|
for ASM 475/452/456/473 (S7-300, PROFIBUS) |
|
|
|
IP 65, -25 °C to +70 °C, 55 x 75 x 30 (L x B x H in mm), with integrated |
|
|
|
antenna, max. limit distance 30 mm (depending on transponder type) |
|
5-10 |
SIMATIC RF300 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
Readers 5.3 RF310R with RS 422 interface
5.3.9Dimension drawing
6,0$7,&
5) 5
Figure 5-6 Dimension drawing for RF310R
|
|
SIMATIC RF300 |
5-11 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
Readers
5.4 RF340R
5.4RF340R
5.4.1Features
Reader RF340R |
Features |
|
|
|
Design |
(1) |
RS 422 interface |
|
|
(2) |
Operating indicator |
|
Application |
Identification tasks on assembly |
|
|
|
lines in harsh industrial |
|
|
|
environments |
|
|
Read/write distance to transponder |
max. 60 mm |
|
|
Data transmission rate |
• Read: approx. 3,100 bytes/s |
|
|
|
• Write: approx. 3,100 bytes/s |
|
5.4.2Display elements of the RF340R reader
Table 5-5 Display elements of the reader
Color |
Meaning |
Green |
Operating voltage available |
yellow |
Transponder present |
red |
Errors |
5.4.3Ensuring reliable data exchange
The "center point" of the transponder must be situated within the transmission window.
5-12 |
SIMATIC RF300 |
System Manual, Release 04/2006, J31069 D0166-U001-A2-7618 |
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